1 package Aug14.IO;
2
3 import java.io.*;
4
5 public class TestIO2 {
6
7 public static void main(String[] args) {
8 File file = new File("D://Text.txt");
9 File f1=new File("D://Test1.txt");
10 File f2=new File("D://Test2.txt");
11 FileReader fr = null;
12 int count = 0;
13 try {
14 fr = new FileReader(file);
15 BufferedReader br = new BufferedReader(fr);
16
17 FileWriter fw1 = new FileWriter(f1);
18 BufferedWriter bw1 = new BufferedWriter(fw1);
19
20 FileWriter fw2 = new FileWriter(f2);
21 BufferedWriter bw2 = new BufferedWriter(fw2);
22
23 String s = null;
24 while ((s = br.readLine()) != null) {
25
26 if (count % 2 != 0) {
27 bw1.write(s);
28 bw1.newLine();
29 //System.out.println(s);
30
31 } else {
32 bw2.write(s);
33 bw2.newLine();
34 //System.out.println(s);
35 }
36
37 count++;
38 }
39
40 bw1.close();
41 bw2.close();
42 br.close();
43 fr.close();
44 fw1.close();
45 fw2.close();
46
47 } catch (FileNotFoundException e) {
48
49 e.printStackTrace();
50 } catch (IOException e) {
51
52 e.printStackTrace();
53 }
54
55 }
56
57 }
1 package Aug14.IO;
2
3 import java.io.BufferedReader;
4 import java.io.File;
5 import java.io.FileNotFoundException;
6 import java.io.FileReader;
7
8 public class TestIO3 {
9
10 public static void main(String[] args) {
11 File file = new File("D://Text1.txt");
12 FileReader fr = null;
13 String s = null;
14 int count = 0;
15 int length=0;
16 try {
17 fr = new FileReader(file);
18 BufferedReader br = new BufferedReader(fr);
19 while ((s = br.readLine()) != null) {
20 int n = s.split(" ").length;
21 count =count+n;
22 length+=s.length()-n;
23 }
24 System.out.println("the number of words : " + count);
25 System.out.println("the length of all word: " + length);
26 System.out.printf("the average word length: %.2f " ,(double) length/count);
27 } catch (Exception e) {
28
29 e.printStackTrace();
30 }
31
32 }
33
34 }
1 package Aug14.IO;
2
3
4 import java.io.*;
5
6 public class Test1 {
7
8 public static void main(String[] args) {
9 BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
10 File file=new File("D://Test12.txt");
11
12 try {
13 System.out.print("Enter a File with Path: ");
14 String filename=br.readLine();
15
16 File file1=new File(filename);
17 if(file1.exists()&&file1.isFile()){
18 System.out.print("Enter a word to searth: ");
19 String word=br.readLine();
20 InputStream in=new FileInputStream(file1);
21 byte data[]=new byte [1024];
22 int len=in.read(data);
23 String s=new String (data,0,len);
24 if(s.indexOf(word)!=-1)
25 {
26 int n=s.split(word).length-1; //Word 出现个数
27
28 System.out.println("The word is exits! count= "+n);
29 System.out.println(s);
30
31 }
32 else
33 System.out.println("The word is not exits!");
34 }
35 else
36 System.out.println("The file is not exits!");
37
38 } catch (IOException e) {
39
40
41 }
42 }
43
44 }
